/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-patterns/array12_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 19:22:03,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 19:22:03,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 19:22:03,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 19:22:03,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 19:22:03,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 19:22:03,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 19:22:03,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 19:22:03,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 19:22:03,980 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 19:22:03,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 19:22:03,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 19:22:03,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 19:22:03,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 19:22:03,981 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 19:22:03,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 19:22:03,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 19:22:03,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 19:22:03,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 19:22:03,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 19:22:03,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 19:22:03,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 19:22:03,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 19:22:03,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 19:22:03,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 19:22:03,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 19:22:03,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 19:22:03,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:22:03,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 19:22:03,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 19:22:03,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 19:22:03,987 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 19:22:03,987 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 19:22:03,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 19:22:03,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 19:22:03,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 19:22:03,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 19:22:03,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 19:22:03,988 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 19:22:03,988 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 19:22:04,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 19:22:04,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 19:22:04,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 19:22:04,227 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 19:22:04,228 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 19:22:04,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array12_pattern.c [2023-12-21 19:22:05,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 19:22:05,445 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 19:22:05,446 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c [2023-12-21 19:22:05,451 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe2e91e2/1dc0390505cb4aa08801a865adcc7552/FLAG1d802c9df [2023-12-21 19:22:05,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe2e91e2/1dc0390505cb4aa08801a865adcc7552 [2023-12-21 19:22:05,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 19:22:05,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 19:22:05,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 19:22:05,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 19:22:05,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 19:22:05,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53780c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05, skipping insertion in model container [2023-12-21 19:22:05,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 19:22:05,638 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c[1349,1362] [2023-12-21 19:22:05,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:22:05,680 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 19:22:05,690 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c[1349,1362] [2023-12-21 19:22:05,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:22:05,725 INFO L206 MainTranslator]: Completed translation [2023-12-21 19:22:05,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05 WrapperNode [2023-12-21 19:22:05,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 19:22:05,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 19:22:05,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 19:22:05,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 19:22:05,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,777 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-12-21 19:22:05,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 19:22:05,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 19:22:05,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 19:22:05,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 19:22:05,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,807 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-21 19:22:05,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 19:22:05,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 19:22:05,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 19:22:05,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 19:22:05,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (1/1) ... [2023-12-21 19:22:05,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:22:05,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 19:22:05,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 19:22:05,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 19:22:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 19:22:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 19:22:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 19:22:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 19:22:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 19:22:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 19:22:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 19:22:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 19:22:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 19:22:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 19:22:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 19:22:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 19:22:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 19:22:05,946 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 19:22:05,947 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 19:22:06,271 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 19:22:06,308 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 19:22:06,308 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-21 19:22:06,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:22:06 BoogieIcfgContainer [2023-12-21 19:22:06,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 19:22:06,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 19:22:06,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 19:22:06,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 19:22:06,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 07:22:05" (1/3) ... [2023-12-21 19:22:06,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195dbffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:22:06, skipping insertion in model container [2023-12-21 19:22:06,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:22:05" (2/3) ... [2023-12-21 19:22:06,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195dbffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:22:06, skipping insertion in model container [2023-12-21 19:22:06,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:22:06" (3/3) ... [2023-12-21 19:22:06,329 INFO L112 eAbstractionObserver]: Analyzing ICFG array12_pattern.c [2023-12-21 19:22:06,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 19:22:06,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 19:22:06,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 19:22:06,383 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c68ffb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 19:22:06,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 19:22:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:22:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 19:22:06,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:22:06,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:22:06,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:22:06,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:22:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -651067928, now seen corresponding path program 1 times [2023-12-21 19:22:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:22:06,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526440318] [2023-12-21 19:22:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:22:06,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:06,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:22:06,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:22:06,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 19:22:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:22:06,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 19:22:06,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:22:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:22:06,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:22:06,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:22:06,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526440318] [2023-12-21 19:22:06,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526440318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:22:06,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:22:06,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 19:22:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541267534] [2023-12-21 19:22:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:22:06,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 19:22:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:22:06,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 19:22:06,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:22:06,555 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 19:22:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:22:06,612 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2023-12-21 19:22:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 19:22:06,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-21 19:22:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:22:06,618 INFO L225 Difference]: With dead ends: 48 [2023-12-21 19:22:06,619 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 19:22:06,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:22:06,623 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:22:06,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 19:22:06,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 19:22:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 19:22:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:22:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-21 19:22:06,650 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2023-12-21 19:22:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:22:06,651 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-21 19:22:06,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 19:22:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-21 19:22:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 19:22:06,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:22:06,652 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:22:06,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 19:22:06,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:06,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:22:06,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:22:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash -924519167, now seen corresponding path program 1 times [2023-12-21 19:22:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:22:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983733510] [2023-12-21 19:22:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:22:06,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:06,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:22:06,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:22:06,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 19:22:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:22:06,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 19:22:06,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:22:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:22:07,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:22:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 19:22:07,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:22:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983733510] [2023-12-21 19:22:07,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983733510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:22:07,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:22:07,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 19:22:07,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447028734] [2023-12-21 19:22:07,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:22:07,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 19:22:07,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:22:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 19:22:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 19:22:07,368 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 19:22:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:22:07,731 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2023-12-21 19:22:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 19:22:07,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2023-12-21 19:22:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:22:07,732 INFO L225 Difference]: With dead ends: 34 [2023-12-21 19:22:07,732 INFO L226 Difference]: Without dead ends: 30 [2023-12-21 19:22:07,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-21 19:22:07,734 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:22:07,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 67 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:22:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-21 19:22:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-21 19:22:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:22:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-12-21 19:22:07,739 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 26 [2023-12-21 19:22:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:22:07,740 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-12-21 19:22:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 19:22:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-12-21 19:22:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 19:22:07,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:22:07,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:22:07,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 19:22:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:07,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:22:07,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:22:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash -414565512, now seen corresponding path program 1 times [2023-12-21 19:22:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:22:07,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659068590] [2023-12-21 19:22:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:22:07,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:07,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:22:07,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:22:07,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 19:22:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:22:08,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 19:22:08,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:22:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 19:22:08,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:22:08,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:22:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659068590] [2023-12-21 19:22:08,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659068590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:22:08,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:22:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 19:22:08,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715563896] [2023-12-21 19:22:08,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:22:08,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 19:22:08,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:22:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 19:22:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-21 19:22:08,126 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 19:22:08,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:22:08,498 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2023-12-21 19:22:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 19:22:08,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-12-21 19:22:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:22:08,499 INFO L225 Difference]: With dead ends: 58 [2023-12-21 19:22:08,500 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 19:22:08,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:22:08,501 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:22:08,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:22:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 19:22:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2023-12-21 19:22:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:22:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-12-21 19:22:08,506 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 30 [2023-12-21 19:22:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:22:08,507 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-12-21 19:22:08,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 19:22:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-12-21 19:22:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 19:22:08,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:22:08,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:22:08,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-21 19:22:08,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:08,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:22:08,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:22:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1779183788, now seen corresponding path program 1 times [2023-12-21 19:22:08,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:22:08,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708351294] [2023-12-21 19:22:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:22:08,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:08,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:22:08,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:22:08,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 19:22:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:22:08,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 19:22:08,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:22:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 19:22:08,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:22:08,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:22:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708351294] [2023-12-21 19:22:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708351294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:22:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:22:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 19:22:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224071755] [2023-12-21 19:22:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:22:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 19:22:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:22:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 19:22:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-21 19:22:08,905 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 19:22:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:22:09,225 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2023-12-21 19:22:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 19:22:09,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-12-21 19:22:09,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:22:09,226 INFO L225 Difference]: With dead ends: 55 [2023-12-21 19:22:09,226 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 19:22:09,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:22:09,227 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:22:09,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 45 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:22:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 19:22:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-21 19:22:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:22:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-12-21 19:22:09,233 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 33 [2023-12-21 19:22:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:22:09,234 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-12-21 19:22:09,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 19:22:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-12-21 19:22:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 19:22:09,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:22:09,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:22:09,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 19:22:09,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:09,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:22:09,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:22:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1065316657, now seen corresponding path program 1 times [2023-12-21 19:22:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:22:09,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743119457] [2023-12-21 19:22:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:22:09,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:09,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:22:09,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:22:09,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 19:22:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:22:09,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 19:22:09,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:22:10,314 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 19:22:10,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-12-21 19:22:11,248 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 19:22:11,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:22:11,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2023-12-21 19:22:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:22:11,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:22:12,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2023-12-21 19:22:12,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 280 [2023-12-21 19:22:12,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2023-12-21 19:22:12,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 124 [2023-12-21 19:22:22,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:22:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743119457] [2023-12-21 19:22:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743119457] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 19:22:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2103263315] [2023-12-21 19:22:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:22:22,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 19:22:22,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 19:22:22,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 19:22:22,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-21 19:22:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:22:23,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 19:22:23,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:22:23,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 19:22:26,197 INFO L349 Elim1Store]: treesize reduction 73, result has 31.8 percent of original size [2023-12-21 19:22:26,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 58 [2023-12-21 19:22:26,461 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 19:22:30,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:22:30,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 117 [2023-12-21 19:22:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 19:22:44,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:22:48,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2103263315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 19:22:48,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:22:48,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2023-12-21 19:22:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098547684] [2023-12-21 19:22:48,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:22:48,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 19:22:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:22:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 19:22:48,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1320, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 19:22:48,304 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 32 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-21 19:22:57,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 19:23:05,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 19:23:10,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 19:23:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:23:10,773 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2023-12-21 19:23:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 19:23:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 34 [2023-12-21 19:23:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:23:10,786 INFO L225 Difference]: With dead ends: 107 [2023-12-21 19:23:10,786 INFO L226 Difference]: Without dead ends: 82 [2023-12-21 19:23:10,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=579, Invalid=3203, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 19:23:10,788 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 137 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-12-21 19:23:10,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 179 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 503 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2023-12-21 19:23:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-21 19:23:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2023-12-21 19:23:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:23:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-12-21 19:23:10,799 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 34 [2023-12-21 19:23:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:23:10,800 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-12-21 19:23:10,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-21 19:23:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-12-21 19:23:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 19:23:10,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:23:10,800 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:23:10,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-21 19:23:11,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 19:23:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:11,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:23:11,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:23:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash 478134995, now seen corresponding path program 2 times [2023-12-21 19:23:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:23:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560066443] [2023-12-21 19:23:11,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:23:11,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:11,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:23:11,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:23:11,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 19:23:11,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:23:11,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:23:11,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 19:23:11,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:23:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 19:23:11,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:23:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 19:23:12,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:23:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560066443] [2023-12-21 19:23:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560066443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:23:12,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:23:12,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2023-12-21 19:23:12,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362614798] [2023-12-21 19:23:12,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:23:12,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 19:23:12,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:23:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 19:23:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-21 19:23:12,200 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 19:23:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:23:14,017 INFO L93 Difference]: Finished difference Result 102 states and 128 transitions. [2023-12-21 19:23:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 19:23:14,019 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 35 [2023-12-21 19:23:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:23:14,020 INFO L225 Difference]: With dead ends: 102 [2023-12-21 19:23:14,020 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 19:23:14,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-12-21 19:23:14,021 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 19:23:14,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 86 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 19:23:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 19:23:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2023-12-21 19:23:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:23:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-12-21 19:23:14,032 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 35 [2023-12-21 19:23:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:23:14,033 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-12-21 19:23:14,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 19:23:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-12-21 19:23:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 19:23:14,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:23:14,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:23:14,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 19:23:14,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:14,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:23:14,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:23:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1458249640, now seen corresponding path program 3 times [2023-12-21 19:23:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:23:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635315273] [2023-12-21 19:23:14,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:23:14,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:14,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:23:14,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:23:14,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 19:23:14,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 19:23:14,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:23:14,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 19:23:14,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:23:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:23:15,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:23:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 19:23:15,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:23:15,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635315273] [2023-12-21 19:23:15,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635315273] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:23:15,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:23:15,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-12-21 19:23:15,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825413571] [2023-12-21 19:23:15,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:23:15,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 19:23:15,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:23:15,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 19:23:15,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-12-21 19:23:15,958 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-21 19:23:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:23:17,467 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2023-12-21 19:23:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 19:23:17,468 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2023-12-21 19:23:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:23:17,468 INFO L225 Difference]: With dead ends: 99 [2023-12-21 19:23:17,468 INFO L226 Difference]: Without dead ends: 76 [2023-12-21 19:23:17,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-12-21 19:23:17,469 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 92 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:23:17,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 106 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 19:23:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-21 19:23:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 60. [2023-12-21 19:23:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 51 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:23:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2023-12-21 19:23:17,482 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 38 [2023-12-21 19:23:17,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:23:17,482 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2023-12-21 19:23:17,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-21 19:23:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2023-12-21 19:23:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 19:23:17,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:23:17,483 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:23:17,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-21 19:23:17,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:17,689 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:23:17,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:23:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 59293688, now seen corresponding path program 4 times [2023-12-21 19:23:17,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:23:17,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53195550] [2023-12-21 19:23:17,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:23:17,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:17,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:23:17,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:23:17,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 19:23:17,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:23:17,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:23:17,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 19:23:17,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:23:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 19:23:18,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:23:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 19:23:19,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:23:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53195550] [2023-12-21 19:23:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53195550] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:23:19,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:23:19,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2023-12-21 19:23:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143944707] [2023-12-21 19:23:19,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:23:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 19:23:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:23:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 19:23:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-12-21 19:23:19,002 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-21 19:23:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:23:20,791 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2023-12-21 19:23:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 19:23:20,801 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2023-12-21 19:23:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:23:20,804 INFO L225 Difference]: With dead ends: 153 [2023-12-21 19:23:20,804 INFO L226 Difference]: Without dead ends: 108 [2023-12-21 19:23:20,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2023-12-21 19:23:20,805 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 220 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:23:20,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 139 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 19:23:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-21 19:23:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2023-12-21 19:23:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-21 19:23:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2023-12-21 19:23:20,830 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 40 [2023-12-21 19:23:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:23:20,830 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2023-12-21 19:23:20,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-21 19:23:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2023-12-21 19:23:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 19:23:20,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:23:20,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:23:20,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 19:23:21,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:21,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:23:21,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:23:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash -91255711, now seen corresponding path program 5 times [2023-12-21 19:23:21,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:23:21,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458143834] [2023-12-21 19:23:21,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 19:23:21,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:21,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:23:21,035 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:23:21,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 19:23:21,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 19:23:21,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:23:21,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 19:23:21,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:23:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 19:23:21,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:23:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 19:23:21,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:23:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458143834] [2023-12-21 19:23:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458143834] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:23:21,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:23:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-12-21 19:23:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459824623] [2023-12-21 19:23:21,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:23:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 19:23:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:23:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 19:23:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-21 19:23:21,421 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 19:23:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:23:22,338 INFO L93 Difference]: Finished difference Result 139 states and 170 transitions. [2023-12-21 19:23:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 19:23:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-12-21 19:23:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:23:22,339 INFO L225 Difference]: With dead ends: 139 [2023-12-21 19:23:22,339 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 19:23:22,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-12-21 19:23:22,341 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 19:23:22,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 83 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 19:23:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 19:23:22,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2023-12-21 19:23:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:23:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2023-12-21 19:23:22,365 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 42 [2023-12-21 19:23:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:23:22,365 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2023-12-21 19:23:22,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 19:23:22,366 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2023-12-21 19:23:22,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 19:23:22,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:23:22,366 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:23:22,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 19:23:22,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:22,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:23:22,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:23:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1596709791, now seen corresponding path program 6 times [2023-12-21 19:23:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:23:22,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576801205] [2023-12-21 19:23:22,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 19:23:22,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:23:22,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:23:22,571 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:23:22,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 19:23:23,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 19:23:23,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:23:23,052 WARN L260 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 19:23:23,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:23:23,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 19:23:23,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-21 19:23:23,837 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-12-21 19:23:23,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 31 [2023-12-21 19:23:24,029 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2023-12-21 19:23:24,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 46 [2023-12-21 19:23:31,669 WARN L293 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 179 DAG size of output: 73 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-21 19:23:31,669 INFO L349 Elim1Store]: treesize reduction 1065, result has 20.0 percent of original size [2023-12-21 19:23:31,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 37 case distinctions, treesize of input 109 treesize of output 309 [2023-12-21 19:23:48,638 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:23:56,663 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:24:08,884 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:24:57,041 WARN L293 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:25:14,746 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:26:47,389 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:26:59,951 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:27:25,744 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:28:38,733 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:29:01,759 WARN L293 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:29:06,883 WARN L293 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:29:45,709 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:29:53,873 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:30:08,078 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:30:20,158 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:30:28,290 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:30:55,788 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:31:03,814 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:31:45,661 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:32:56,146 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:33:08,219 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:33:22,297 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:33:55,641 WARN L293 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:34:39,507 WARN L293 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:34:47,535 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:34:59,616 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:35:08,035 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:35:35,579 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:35:40,698 WARN L293 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:35:52,760 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:36:01,034 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:36:23,876 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:36:31,899 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:36:44,182 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-21 19:36:45,513 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:36:45,514 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:36:46,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 19:36:46,714 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 19:36:46,729 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 19:36:46,729 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 47 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-21 19:36:46,732 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2023-12-21 19:36:46,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 19:36:46,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:36:46 BoogieIcfgContainer [2023-12-21 19:36:46,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 19:36:46,735 INFO L158 Benchmark]: Toolchain (without parser) took 881271.18ms. Allocated memory was 251.7MB in the beginning and 302.0MB in the end (delta: 50.3MB). Free memory was 198.0MB in the beginning and 111.8MB in the end (delta: 86.2MB). Peak memory consumption was 166.4MB. Max. memory is 8.0GB. [2023-12-21 19:36:46,735 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 206.6MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 19:36:46,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.92ms. Allocated memory is still 251.7MB. Free memory was 197.7MB in the beginning and 185.8MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 19:36:46,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.50ms. Allocated memory is still 251.7MB. Free memory was 185.8MB in the beginning and 184.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:36:46,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-21 19:36:46,741 INFO L158 Benchmark]: Boogie Preprocessor took 56.44ms. Allocated memory is still 251.7MB. Free memory was 184.1MB in the beginning and 182.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:36:46,741 INFO L158 Benchmark]: RCFGBuilder took 473.46ms. Allocated memory is still 251.7MB. Free memory was 182.0MB in the beginning and 166.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 19:36:46,742 INFO L158 Benchmark]: TraceAbstraction took 880425.23ms. Allocated memory was 251.7MB in the beginning and 302.0MB in the end (delta: 50.3MB). Free memory was 165.9MB in the beginning and 111.8MB in the end (delta: 54.1MB). Peak memory consumption was 135.0MB. Max. memory is 8.0GB. [2023-12-21 19:36:46,742 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 206.6MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.92ms. Allocated memory is still 251.7MB. Free memory was 197.7MB in the beginning and 185.8MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.50ms. Allocated memory is still 251.7MB. Free memory was 185.8MB in the beginning and 184.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.44ms. Allocated memory is still 251.7MB. Free memory was 184.1MB in the beginning and 182.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 473.46ms. Allocated memory is still 251.7MB. Free memory was 182.0MB in the beginning and 166.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 880425.23ms. Allocated memory was 251.7MB in the beginning and 302.0MB in the end (delta: 50.3MB). Free memory was 165.9MB in the beginning and 111.8MB in the end (delta: 54.1MB). Peak memory consumption was 135.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 34). Cancelled while NwaCegarLoop was analyzing trace of length 47 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.4s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 29.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 670 SdHoareTripleChecker+Valid, 20.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 660 mSDsluCounter, 768 SdHoareTripleChecker+Invalid, 19.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 607 mSDsCounter, 175 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1828 IncrementalHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 175 mSolverCounterUnsat, 161 mSDtfsCounter, 1828 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 585 GetRequests, 399 SyntacticMatches, 5 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 34.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=8, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 107 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 42.9s InterpolantComputationTime, 326 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 492 ConstructedInterpolants, 172 QuantifiedInterpolants, 5002 SizeOfPredicates, 51 NumberOfNonLiveVariables, 696 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 222/299 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown